A system developed by Dr. J. Allen Hynek which categorizes the various types of UFO sightings. The categories are as follows:
CLOSE ENCOUNTERS OF THE FIRST KIND
- A UFO in close proximity of a witness.
CLOSE ENCOUNTERS OF THE SECOND KIND
- A UFO leaves permanent or semi-permanent physical markings behind (such as burns on the ground or radiation traces).
CLOSE ENCOUNTERS OF THE THIRD KIND
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A Close Encounter of the First or Second Kind where extra terrestrials are also seen.
CLOSE ENCOUNTERS OF THE FOURTH KIND
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A UFO’s occupants abduct an individual. Abductee's experience severe reality distortion such as memory lapse, 'post abduction trauma' symptoms such as fear and anxiety.
CLOSE ENCOUNTERS OF THE FIFTH KIND
- Communication occurs between a person and an extra terrestrial.
